Combined insulator and lamp-hanger.



110,887,996. PATENTED MAY 19', 1908. J. MPBURGE.

COMBINED INSULATOR AND LAMP-HANGER. APPLIOATIOR IILBD 0pm, 1906.

a sums-SEEM 2.

v 1 Inven'ior.

James M..Burge PATENTED MAY 19, 1908.

J. M. BURGE. COMBINED INSULATOR AND LAMP HANGER.

APPLIOATION TILED 00T.5, 1906.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

JAMES M. BURGE, OF DECATUR, ILLINOIS.

COMBINED INSULATOR AND LAMP-HANGER.

Application filed October 5, 1906.

' new and useful Improvements in a Combined Insulator and Lamp-Hanger,of which the following is a specification.

This invention is designed to supply, simplify and improve the means forinsulating and hanging street are lamps.

It is embodied in the structure hereinafter described and is defined inthe appended claims.

In the drawings forming a part of this specification, Figure 1 taken asa whole shows the lamp hanger with ring 9, cross arm 14 and dome 1 and 1into which is fastened grooved spool 5.- Fig. 2 is a cross section viewof non-conducting grooved spool which is made of glass, porcelain orother noncon ductive material. Fig. 3 is the side view of the lamphanger as shown in Fig. 1 showing similar means of attachingnon-conductive spool as shown in Fig. 2. Fig. 4 is a cross section ofthe insulator in another form showing means for holding non-conductivespool and Fig. 5 is a face view of yoke like rings which attach to thesame for holding nonconductive spool.

In constructing insulator or lamp hanger in accordance with my inventionthe whole Fig. 1 as shown including dome of body 1, cross arm ring 8 andsuspension ring 9 is cast in one piece in iron or similar metal and 1 ofFig. 1 is cast of like metal, attached there- 7 to and made a member of1 by means of bolts for clamping arms 3 when 1 is arranged so that 3rests on 3 and is made fast there by bolts closing the access to 2 andcompleting the dome of the insulator or hanger.

The grooved spool as shown in Fig. 2 fits closely between the arms 2 asshown in Fig. 1 said arms 2 being one continuous ring formed inside ofthe dome and cast with same, being cast in two equal parts as 1 and 1,and said arms clamping said grooved spool 5 in Fig. 2 at grooves M,hooked bolt 6 externally screw threaded extending lengthwise through thesaid grooved spool 5 having attached at its opposite end an internallyscrew threaded nut 7 through which the said hook shaped externally screwthreaded bolt 6 is held firmly in position and bolt 6 being surroundedby an asbestos sheath 12 in Fig. 2 and the upper surface being coveredby an asbestos washer or covering 7. The ring 8 as shown Specificationof Letters Patent.

Patented May 19, 1908.

Serial No. 337,623.

in Figs. 1 and 3 surrounds cross arm 13, said cross arm having at itsopposite ends porcelain spools of non-conducting material 14. The saidring 8 as shown in Figs. 1 and 3 has a shoulder 10 and drilled opening11, said drilled opening being used for the purpose of attaching saidcross arm 13 substantially and rigid to the said ring 8. Fig. 3 shows anexterior view of said improvement with dome 1 cross arm ring 8 and ropering 9 and shoulder 19 substantially as shown in Fig- 1 cast in onepiece whereon yoke shaped clamp ring 14 as shown in Figs. 4 and 5clamped on opposite sides of shoulder 16 in Fig. 3. The said grooves Mof grooved spool 5 in Fig. 2 being held substantially in the yoke shapedclamp rings 14 thereby holding said grooved spool 5 rigidly in positionand serve the same purpose as the shoulders 3 and arms 2 in l/Vithgrooved spool in Fig. 2 when held in position within the dome 1 byshoulders 2 or yoke like clamps 14 in Fig. 5 is under and be neath thecross arm and suspension rope ring (entirely within suspension and ropering) 8 and 9 entirely within and beneath dome 1, said grooved shoulders2 in Fig. 1 clamping groove in Fig. 2 or as shown at 14 in Fig. 3leaving the outer surface of dome 1 as shown at B free and beyond thesurface and any part of such grooved spool 5 as shown in.

Figs. 1, 3 and 4 making it impossible for water when coming in contactwith the outer edge of the dome to drip or run on to any part of thesaid grooved spool 5, said hooked member 6 in grooved spool 5 being heldrigidly in place holds the arc lamp and from this hook a street are lampis suspended, it being impossible for the rain or water to drip or runon to said spool 5, therefore it is likewise kept free from coming incontact with hooked member 6 from which the lamp suspends therebypreventing the reaction of the water upon any charge that might be contained in hooked member 6, and cuts ofi communication between the chargethat might be contained in said dome and the arc lamp, making a completeinsulation from the lamp and the dome from which the spool 5 issuspended preventing breakage of the spool or dropping of the lamp ashas been and is the fault with present are lamp hangers, likewise is therelative positions of the outer surface of the dome and the means ofsuspension of grooved spool 5 as shown in Figs. 3 and 4.

The clamping of the spool 5 within the dome as hereinbefore set forthplaces same in a rigid position, and that position forms an arch orexpanse making the inner surface of the dome equal distance from the nut7 of hooked member 6 and said distance being so evenly divided betweenthe said nut 7 and the inner surface of dome 1 as to make it impossibleto form at any time an electric are between the charged hooked member 6and any surface of said dome 1 as may be charged, therefore, composingor forming a breaker, so to speak, in the communication of the chargefrom the lamp to the dome like, it being completely insulated by the useof said grooved spool composed of glass or porcelain or othernon-conductive material and which prevents such communication, andthereby prevents breakage of said spool and insulator and the droppingof the are light.

Having thus described my invention what I claim as new, and desire tosecure by Letters Patent, is

1. In an insulator and are lamp hanger, the combination of a dome havingcast thereon a suspension ring, shoulders extending from the walls andbeneath the dome on opposite sides of said dome, and the interior ofsaid dome being hollow, substantially as described.

2. In an insulator and are lamp hanger, the combination of a dome havinga suspen sion ring attached thereto, shoulders exteriorly attached toand extending downward from the sides of and beneath the dome, the domeprovided with a hollow space or cavity for the receipt of other members,substantially as described.

3. In an insulator and are lamp hanger the combination of a dome andsuspension ring eXteriorly attached and shoulders to said domeexteriorly attached upon opposite sides and beneath said dome, yoke likemem bers attached to said. shoulders by screw threaded. members means ofclamping l l i l l l i r grooved non-conducting spool, said spoolcontaining a rotatable hooked member and forming an arch in the domeabout the are lamp, substantially as set forth.

a. In an insulator and are lamp hanger,

the combination of a grooved spool containing a rotatable bearing memberand a sheath covering one end of the spool and the memher and means ofseparating the spool and the member, substantially as described.

5. In an insulator and are lamp hanger a combinationof a spool 5 with agroove M. running around and being contained in the outer surface ofsaid spool, a hooked member 6 running longitudinally through the spool 5and being screw threaded on its opposite end and being attached theretoby means of nut 7, an asbestos cover, covering entire end of spool 5opposite hooked member 6 and cover nut 7 as at 7 A and clamped and heldin the said dome 1 for the purposes as herein set forth.

6. In an insulator and are lamp hanger the combination of a dome withexteriorly con nected suspension ring, shoulders attached eXteriorly andon the outer surface at the lower edge on opposite sides of said dome,an exterior rim forming shoulder, means for opening and closing said.shoulder and means for clamping and holding in said shouldernon-conducting spool with rotary grooved spool containing a longitudinalbolt hook, said bolt hook being screw threaded on its end opposite tothe hook and being substantially attached to said. non-conducting spooland means for attaching to said spool an are light substantially asdescribed.

In testimony whereof I sign my name in the presence of two subscribingwitnesses.

JAMES M. BURGE.

Witnesses:

C. L. WADDELL, JOHN L. WADDELL.

